Not sure if it exists or if it’s a original idea but it’s interesting imo
Switch chess
Sort:
Btw white always goes first.so once the second player moves he technically moves a second time but so is the first player once he plays his move as black
It’s chess but after white and black moves you switch sides and now black is white and white is black.then after the two player move it switches again it continues until there is checkmate or resignation